void main() {
    //成绩等级速查
    int score = 78;
    String level = (score >= 60 )? "通过" : "补考";
    System.out.println(level);

    //成绩等级（三级）
    int score1 = 85;
    String grade = (score >= 90) ? "优秀" : (score1 >= 60) ? "合格" : "不合格";
    System.out.println(grade);

}